Macrocyclic Indole Compounds Inhibiting HCV Polymerase

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Solution Overview

Problem

Current treatments for Hepatitis C virus (HCV) infections are inadequate, and there is a need for effective inhibitors of HCV RNA polymerase to address this gap.

Innovation Solution

Development of macrocyclic indole compounds, specifically compounds of formula (I) and their pharmaceutically acceptable salts, which are designed to inhibit HCV polymerase and are used in pharmaceutical compositions for treating or preventing HCV infections, involving aromatic rings with specific substituents and functional groups that form a macrocyclic structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current treatments for HCV infections are used, then existing therapeutic options are available, but treatment effectiveness is inadequate

Engineering Contradiction:
Improvetreatment effectivenessVSAvoidavailability of effective inhibitors
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent employs parameter changes by systematically varying structural parameters of indole compounds (substituents at different positions, ring modifications, macrocyclic variations) to optimize HCV polymerase inhibition. This is evident in the extensive definition of possible substituents (Q1, Q2, R1-R23) and ring structures (A, Het, Ar) that can be modified to improve therapeutic effectiveness while maintaining the core indole framework.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If macrocyclic indole compounds with complex structures are developed, then inhibitory activity against HCV polymerase is achieved, but structural complexity increases

Engineering Contradiction:
Improveinhibitory activityVSAvoidmolecular structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The macrocyclic indole compounds are segmented into distinct functional modules: a core indole structure (positions 1-7), substituent groups (Q1, Q2, R1-R23), and macrocyclic linkers (A, Het, Ar). This segmentation allows systematic optimization of each module's contribution to HCV polymerase inhibition while managing overall molecular complexity through modular design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent designs macrocyclic indole compounds with multiple functional groups that can simultaneously interact with different regions of the HCV polymerase active site. The substituents Q1 and Q2, along with various R groups, provide multi-functionality by enabling hydrogen bonding, hydrophobic interactions, and steric complementarity, allowing a single compound to achieve high inhibitory activity through multiple binding mechanisms.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS7781422B2Antiviral indoles
Publication Date: 2010.08.24 MSD ITALIA SRL
  • US7781422B2 patent drawing
  • US7781422B2 patent drawing
  • US7781422B2 patent drawing

AI summary

Compounds of the formula (I):wherein A, B, D, M, Ar, W, X, Y, Z and R1 are as defined herein, are useful in the prevention and treatment of hepatitis C infections. The compounds, their preparation, pharmaceutical compositions containing them and their use in medicine are disclosed.